Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. William Wilberforce (24 August 1759 29 July 1833) was a British politician, a philanthropist and a leader of the movement to abolish the slave trade. A native of Kingston upon Hull, Yorkshire, he began his political career in 1780 and became the independent Member of Parliament for Yorkshire (1784 1812). In 1785, he underwent a conversion experience and became an evangelical Christian, resulting in major changes to his lifestyle and a lifelong concern for reform. In 1787, he came into contact with Thomas Clarkson and a group of anti-slave-trade activists, including Granville Sharp, Hannah More and Charles Middleton. They persuaded Wilberforce to take on the cause of abolition, and he soon became one of the leading English abolitionists. He headed the parliamentary campaign against the British slave trade for twenty-six years until the passage of the Slave Trade Act 1807.